Improvement in feed-water heaters



UNITED STATES PATENT OFFICE.

JOHN NICHOLSON, OF ALLEGHENY CITY,- PENNSYLVANIA.

IMPROVEMENT iN FEED-WATER HEATERFS.

Specification forming part of Letters Patent No. 54,940, dated May 2J,1866.

To all whom it may concern:

Be it known that I, JOHN NICHOLSON, of the city and county of Allegheny,and State of Pennsylvania, have invented a new and useful Improvement inWater-Heaters for Steam- Boilers; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accom panyin gdrawings and to the letters of-reference markedthereon.

The nature of my invention consists in a steam-chamberfurnished with aninlet and outlets for steam, and placed within a waterchamber Whicli isconnected to the steam-boiler and the supply of Water by means ot'suitable pipes, the Whole being constructed and arranged substantiallyin the manner hereinafter described.

To enable others skilled in the art to make and use my inventiom'I willproceed to describe its construction and operation.

In the accompanying drawings, Figure l represents a longitudinal sectionof my improved Water-heater for steam-boilers. Fig. 2 represents atransverse section of the same cut through at line l.

In the drawings. A represents the steamchamber, which is .furnished withan inlet, B, for steam. This inlet or pipe is connected to ,thesteam-boiler and is furnished with a suitable valve for regulating theadmission of the steam into the chamber A. The upper end (marked f) ofthe steam-chamber A is made coniform, so that the Water in entering theWater-chamber I) will be distributed evenly around the sides of thesteam-chamber.

The bottom or lower end of the steam-chamber is furnished with a shortpipe, (marked 0,) which is placed in the center of the bottom ot' thechamber, .an d so arranged that it will come directlyover the pipe(marked X) of the Waterchamber.

Around the Outer edge of the bottom of the steam-chamber are a number ofsmall openings, (marked e.) l

The space which forms that part of the water-chamber which surrounds thesides of the steam-chamber A should be made very narrow, so as to form athin sheet of Water, so that it can be heated with rapidity as it passesdown the sides of the steam-chamber.

The pipe o is connected to the ordinary injector now used for supplyingboilers With Water; or it can be, when so desired, connected to anydevice for supplying the chamber D with Water.

The pipe X is connected in a suitable manner to the steam-boiler or tothe stand-pipe 5 or it may, if so desired, be attached to the forcepumpused for forcing Water into the boiler.

The man ner of constructing and the relation that the several parts ofmy improved heater bear to each other Will readily be understood by theskillful mechanic. I will, therefore, proceed to describe its operation.Water is forced into the chamber D by the ordinary injector, and steamis admitted into the chamber A through the pipe B, which Will heatthewater as it passes down the sides of the chamber; and after it hasperformed its oiiicein heating the Water, it will pass out through theopenings c and pipe O, and assist in forcing the Water into the boiler.

The advantages Ot' my improved heater are as follows: First, a constant,regular, and uniform action of the injeetoris obtained; second,supplying the boiler with hot Water when the injector is used as a meansfor forcing Water into the steam-boiler, all of which is very d`esirableand very useful.

Having thus described the nature, construction, and operation of myimprovement, what '-I claim as of my invention isrlhe steam-chamber A,furnished with an inlet,-B, and outlets C and e for steam, and placedwithin a Water-chamber, D, which is connected to the steam-boiler bypipe X and to the supply of Water by pipe o, the Whole beingconstructed, arranged, and operating substantially as herein described,and for the purpose set forth.

JOHN N IOHOLSON.

Witnesses:

J Aix/nes J. JOHNSTON, ALEXANDER HAYs.

